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Acquisition and Divestitures (Schedule of Preliminary Allocation of the Total Purchase Price) (Details) $ / shares in Units, shares in Millions, $ in Millions | Jan. 07, 2021 USD ($) $ / shares shares | Dec. 31, 2021 shares | Dec. 31, 2020 shares
--- | --- | --- | ---
Consideration: |  |  |
Conversion of common stock into right to received per share | 0.5165 |  |
Common stock, shares issued (in shares) | shares |  | 663.0 | 382.0
Total common equity consideration | $ 5,383 |  |
Share-based replacement awards | 49 |  |
Assets acquired: |  |  |
Cash, cash equivalents and restricted cash | 344 |  |
Accounts receivable | 425 |  |
Other current assets | 49 |  |
Right-of-use assets | 38 |  |
Proved oil and gas property and equipment | 7,017 |  |
Unproved and properties under development | 2,362 |  |
Other property and equipment | 485 |  |
Investments | 400 |  |
Other long-term assets | 43 |  |
Total assets acquired | 11,163 |  |
Liabilities assumed: |  |  |
Accounts payable | 346 |  |
Revenue and royalties payable | 223 |  |
Other current liabilities | 454 |  |
Debt | 3,562 |  |
Lease liabilities | 38 |  |
Asset retirement obligations | 94 |  |
Deferred income taxes | 249 |  |
Other long-term liabilities | 765 |  |
Total liabilities assumed | 5,731 |  |
Net assets acquired | $ 5,432 |  |
WPX |  |  |
Consideration: |  |  |
WPX Common Stock outstanding | shares | 561.2 |  |
Devon and WPX Agreement [Member] |  |  |
Consideration: |  |  |
Conversion of common stock into right to received per share | 0.5165 |  |
Common stock, shares issued (in shares) | shares | 289.9 |  |
Devon closing price on January 7, 2021 | $ / shares | $ 18.57 |  |
Total consideration | $ 5,432 |  |

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